NBTY refunding more than $2 million for children's vitamins

(CNN) - The marketer of Disney and Marvel hero-themed vitamins for children is refunding more than $2 million dollars.

NBTY has admitted its vitamins contained only a fraction of the nutritional value it claimed on the packaging. The pills were advertised as containing a dose of DHA that would satisfy 100 percent of a child's daily requirement.

But the Federal Trade Commission says in some cases the vitamins contained only minuscule amounts of DHA, an omega-3 fatty acid found in fish.

The packaging featured characters like Disney princesses, Winnie the Pooh, Nemo and Spider-Man.

The vitamins were sold at a number of major retailers and online for between $4 and $8.